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A low warpage good appearance high heat resistant polyester composite material and preparation method thereof

A polyester composite material with high heat resistance technology, applied in the field of polymer material modification, can solve the problems of high price and high production cost of flat glass fiber, and achieve the effects of good appearance, stable shrinkage rate and good injection molding processability

Active Publication Date: 2021-10-01
深圳市高科塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, many patent documents mention the use of flat glass fiber to solve the problem of low warpage of materials. Polyester modification also mentions the use of low crystallization PET and flat glass fiber to solve low warpage, but the price of flat glass fiber is too high. high production cost

Method used

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  • A low warpage good appearance high heat resistant polyester composite material and preparation method thereof
  • A low warpage good appearance high heat resistant polyester composite material and preparation method thereof
  • A low warpage good appearance high heat resistant polyester composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0038] The following raw materials are selected in parts by weight: 30 parts of PET resin, 20 parts of PBT resin (KH2083), 2 parts of toughening agent AX8900, 13 parts of flame retardant, 0.4 part of antioxidant, 0.6 part of lubricant, filling 3 parts of the agent, 1 part of the nucleating agent, mixed in a medium-speed mixer for 5 minutes, 30 parts of glass fiber T635B (added at the glass fiber port), extruded through a twin-screw extruder with a melting temperature of 240-270 ° C, and pelletized. Among them, the temperature of each section of the twin-screw extruder is set as follows: the temperature of the first zone is 240°C, the temperature of the second zone is 260°C, the temperature of the third zone is 270°C, the temperature of the fourth zone is 270°C, the temperature of the fifth zone is 260°C, the temperature of the sixth zone is 260°C, and the temperature of the seventh zone is 260°C. The temperature in zone 250°C, the temperature in zone 8 is 240°C, the temperature...

Embodiment 2

[0040] Select the following raw materials in parts by weight: 25 parts of PET resin, 25 parts of PBT resin (KH2083), 2 parts of toughening agent AX8900, 13 parts of flame retardant, 0.4 part of antioxidant, 0.6 part of lubricant, and fill 3 parts of the agent, 1 part of the nucleating agent, mixed in a medium-speed mixer for 5 minutes, 30 parts of glass fiber T635B (added at the glass fiber port), extruded through a twin-screw extruder with a melting temperature of 240-270 ° C, and pelletized. Among them, the temperature of each section of the twin-screw extruder is set as follows: the temperature of the first zone is 240°C, the temperature of the second zone is 260°C, the temperature of the third zone is 270°C, the temperature of the fourth zone is 270°C, the temperature of the fifth zone is 260°C, the temperature of the sixth zone is 260°C, and the temperature of the seventh zone is 260°C. The temperature in zone 250°C, the temperature in zone 8 is 240°C, the temperature in z...

Embodiment 3

[0042] Select the following raw materials in parts by weight: 20 parts of PET resin, 30 parts of PBT resin (KH2083), 2 parts of toughening agent AX8900, 13 parts of flame retardant, 0.4 part of antioxidant, 0.6 part of lubricant, and fill 3 parts of the agent, 1 part of the nucleating agent, mixed in a medium-speed mixer for 5 minutes, 30 parts of glass fiber T635B (added at the glass fiber port), extruded through a twin-screw extruder with a melting temperature of 240-270 ° C, and pelletized. Among them, the temperature of each section of the twin-screw extruder is set as follows: the temperature of the first zone is 240°C, the temperature of the second zone is 260°C, the temperature of the third zone is 270°C, the temperature of the fourth zone is 270°C, the temperature of the fifth zone is 260°C, the temperature of the sixth zone is 260°C, and the temperature of the seventh zone is 260°C. The temperature in zone 250°C, the temperature in zone 8 is 240°C, the temperature in z...

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Abstract

The invention relates to the technical field of polymer material modification, in particular to a low-warp, good-appearance, high-heat-resistant polyester composite material and a preparation method thereof. The polyester composite material is composed of the following raw materials: PET resin, PBT resin, glass Fiber, toughening agent, heat stabilizer, lubricant, nucleating agent, flame retardant and filler; the nucleating agent is a mixture of LCP, modified montmorillonite, silicon dioxide and sodium polyacrylate. The low warpage, good appearance and high heat-resistant polyester composite material of the present invention has stable shrinkage rate and good injection molding processability, and has lower water absorption rate than nylon, heat aging resistance, toughness equivalent to PA66, and equivalent to PPS Chemical corrosion resistance, can replace expensive PA66 or PPS, and has better heat resistance, good appearance and low warpage than PBT and PA6, mainly used in precision structures in electronic appliances, automobiles, and new energy industries Appearance parts, heat-resistant parts.

Description

technical field [0001] The invention relates to the technical field of polymer material modification, in particular to a polyester composite material with low warpage, good appearance and high heat resistance and a preparation method thereof. Background technique [0002] Polyester is one of the five major engineering plastics, including PBT, PET, PCT, PTT and PEN. At present, PET and PBT occupy the main market. Other types of polyester are expensive due to the synthesis of monomers and route technology. Small, and the domestic technical level is limited. PET is a crystalline polymer with high melting temperature (Tm) and glass transition temperature (Tg), which can maintain excellent physical and mechanical properties in a wide temperature range. Its fatigue resistance, Excellent friction resistance, excellent aging resistance, outstanding electrical insulation, stable to most organic solvents and inorganic acids, and low production energy consumption, good processability,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L23/08C08L63/00C08L83/04C08K7/14C08K3/24C08K5/20C08K5/526C08K3/34C08K3/30C08K13/04
CPCC08K2003/3045C08L67/02C08L2201/02C08L2201/08C08L2205/025C08L2205/035C08L2205/24C08L23/0869C08L63/00C08L83/04C08K7/14C08K3/24C08K5/20C08K5/526C08K3/34C08K3/30C08K13/04
Inventor 苏健新苏志军周乾桃廖乾明郭丽
Owner 深圳市高科塑化有限公司
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